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| The Twin Sisters. The darker one on the left is 2.5 Billion years old. The one on the right is only 25 Million years old (100 times younger!) |
Tuesday, August 19, 2014
City of Rocks
Today we left Ketchum and spent the afternoon exploring the City of Rocks National Reserve in southern Idaho. We are in Tremonton, UT and heading for Green River tomorrow.
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